@charset "utf-8";
* {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}

li {
    list-style: none;
}

a {
    text-decoration: none;
 color: #333;
}

h2,
h3,
i,
em {
    font-style: normal;
}

html,
body {
    font-family: 微软雅黑;
}

input,
img,
a {
    outline: none;
    border: 0;
}

.clear {
    clear: both;
}

.px1650 {
    max-width: 1660px;
    margin: 0 auto;
}

.px1725 {
    max-width: 1350px;
    margin: 0 auto;
}

.pic {
    position: relative;
    padding-top: 75%;
    overflow: hidden;
}

.pic img {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    transition: all .6s;
}

.pic:hover img {
    transform: scale(1.1);
}

.header {
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    padding-left: 35px;
    padding-right: 80px;
    padding-top: 12px;
    z-index: 999;
    transition: all .3s;
}

.header.on {
    position: fixed;
    background-color: #015dac;
    z-index: 999;
    transition: all .3s;
}

.header::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    height: 100%;
    bottom: 100%;
    background-color: #065598;
    z-index: -1;
    transition: bottom .5s;
}

.header.on::before {
    bottom: 0;
}

.head-top {}

.head-l {
    float: left;
}

.head-l a {
    display: block;
}

.head-l a img {
    display: block;
}

.head-r {
    float: right;
    WIDTH: 38%;
}

.top-r {
    text-align: right;
    margin-top: 10px;
    WIDTH: 95%;
}

.top-r a {
    display: inline-block;
    text-align: center;
    font-size: 18px;
    color: #fff;
    vertical-align: middle;
    FLOAT: LEFT;
    LINE-HEIGHT: 54px;
}

.top-r a:hover {
    opacity: .8;
}

.top-r .search {
    position: relative;
    display: inline-block;
    width: 400px;
    height: 40px;
    line-height: 40px;
    background-color: #7d95ac;
    font-size: 0;
    vertical-align: middle;
    margin-left: 25px;
}

.top-r .search input[type="text"] {
    width: 100%;
     height: 40px;
     line-height: 40px;
    vertical-align: middle;
    box-sizing: border-box;
    padding-left: 10px;
    padding-right: 100px;
    background-color: transparent;
    font-size: 24px;
    color: #fff;
}

.top-r .search  input{
    position: absolute;
    right: 0;
    top: 0;
    width: 100px;
     height: 40px; 
     line-height: 100%; 
    background-color: #16407d;
    text-align: center;
    font-size: 24px;
    color: #fff;
}

.nav {
    margin-top: 45px;
}

.header .nav {
    margin-top: 30px;
}

.nav>ul>li {
    position: relative;
    float: left;
    width: 8.333%;
    text-align: center;
    padding-bottom: 10px;
}

.nav>ul>li>a {
    position: relative;
    font-size: 20px;
    color: #fff;
}

.nav>ul>li>a:before {
    content: "";
    left: 50%;
    right: 50%;
    height: 2px;
    background: #bbd2ec;
    position: absolute;
    bottom: 0;
    transition: all 0.3s;
}

.nav>ul>li>a:after {
    content: "";
    width: 2px;
    height: 0;
    background: #bbd2ec;
    position: absolute;
    bottom: 0;
    left: 50%;
    transition: all 0.3s;
}

.nav>ul>li.on>a::before {
    left: 0;
    right: 0;
}

.nav>ul>li.on>a:after {
    height: 10px;
    bottom: -10px;
}

.nav>ul>li>ul {
    position: absolute;
    padding-top: 5px;
    padding-bottom: 10px;
    top: 35px;
    background: #bbd5f1;
    width: 110px;
    left: 50%;
    margin-left: -55px;
    z-index: 999;
    display: none;
}

.nav>ul>li>ul>li:first-child {
    margin-top: 0;
}

.nav>ul>li>ul>li {
    text-align: center;
    margin-top: 15px;
    line-height: 20px;
}

.nav>ul>li>ul>li>a {
    font-size: 16px;
    color: #fff;
}

.nav>ul>li:hover>a {
    
}

.header.on .nav>ul>li:hover>a {
    color: #fff;
    font-weight: bold;
}

.nav>ul>li>ul>li:hover>a {
    color: #103c83;
}

.banner a {
    display: block;
}

.banner a img {
    display: block;
    width: 100%;
}

.banner a::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    background: url(https://vpn.nbut.edu.cn/https/77726476706e69737468656265737421e6e74fd229327d44300d8db9d6562d/https/77726476706e69737468656265737421e6e74fd229327d44300d8db9d6562d/https/77726476706e69737468656265737421eaff40923625661e700a9cb8d65027208618d0/system/_owners/dxxy/_webprj/images/banner-tc.png) no-repeat center top;
    background-size: 100% auto;
}

.banner .slick-dots {
    bottom: 45px;
    width: auto;
    left: 50%;
    transform: translateX(-50%);
}

.banner .slick-dots li {
    width: 15px;
    height: 15px;
    border-radius: 50%;
    background-color: #e2dfdc;
    margin: 0 33px;
}

.banner .slick-dots li.slick-active {
    background-color: #2f569c;
}

.banner .slick-prev {
    width: 47px;
    height: 71px;
    left: 40px;
    background: url(https://vpn.nbut.edu.cn/https/77726476706e69737468656265737421e6e74fd229327d44300d8db9d6562d/https/77726476706e69737468656265737421e6e74fd229327d44300d8db9d6562d/https/77726476706e69737468656265737421eaff40923625661e700a9cb8d65027208618d0/system/_owners/dxxy/_webprj/images/banner-l.png) no-repeat center center;
}

.banner .slick-next {
    width: 47px;
    height: 71px;
    right: 40px;
    background: url(https://vpn.nbut.edu.cn/https/77726476706e69737468656265737421e6e74fd229327d44300d8db9d6562d/https/77726476706e69737468656265737421e6e74fd229327d44300d8db9d6562d/https/77726476706e69737468656265737421eaff40923625661e700a9cb8d65027208618d0/system/_owners/dxxy/_webprj/images/banner-r.png) no-repeat center center;
}


/* 移动端头部 */

.top {
    max-width: 1920px;
    margin: 0 auto;
    position: fixed;
    right: 10px;
    top: 18px;
    width: 25px;
    height: 25px;
    z-index: 9999;
}

.wap {
    display: none;
}

.top>img {
    display: block;
    width: 100%;
}

.wap-menu {
    position: absolute;
    top: 0;
    right: 0;
    z-index: 99999;
    font-size: 0;
}

.wap-menu img {
    height: 25px;
}

.close-menu {
    display: none;
    position: absolute;
    right: 0;
    top: 0;
}

.footer {
    background: #065598;
    /* background: url(https://vpn.nbut.edu.cn/https/77726476706e69737468656265737421eaff40923625661e700a9cb8d65027208618d0/system/_owners/dxxy/_webprj/images/foot-bg.jpg) no-repeat center center; */
    background-size: cover;
    /* padding: 30px 0; */
}
#link{padding: 20px 0;
    background: #3778b0;
}
.link h2 {
    font-size: 20px;
    color: #fff;
    font-weight: normal;
    /* margin-bottom: 20px; */
display:inline-block;
}
.link .lj{display:inline-block;}
.link ul {
    margin-left: -15px;
    margin-right: -15px;
}

.link ul li {
    margin: 0 15px;
}

.link ul li a {
    display: block;
    border-radius: 10px;
    overflow: hidden;
}

.link ul li a .pic {
    padding-top: 19%;
}

.foot-down {
    margin-top: 20px;
    padding-bottom: 20px;
}

.fd-l {
    float: left;
}

.fd-l a {
    display: block;
}

.fd-l a img {
    display: block;
}

.fd-r {
    float: right;
    margin-top: 15px;
}

.fd-r p {
    line-height: 38px;
    font-size: 20px;
    color: #fff;
}

@media screen and (max-width: 1400px) {
    .header {
        padding-left: 15px;
        padding-right: 15px;
    }
    .head-r{
        width:45%;
    }
    .nav>ul>li>a {
        font-size: 16px;
    }
    .head-l a img {
        height: 50px;
    }
    .top-r .search {
        width: 340px;
        height: 45px;
        line-height: 45px;
    }

    .top-r .search input {
        height: 45px;
        line-height: 45px;
        font-size: 16px;
    }
    .top-r a {
        font-size: 18px;
        line-height: 45px;
    }
}

@media screen and (max-width: 1024px) {
    body {
        padding-top: 60px !important;
    }
    .header {
        display: none !important;
    }
    
    .wap {
        display: block !important;
    }
    .m-head {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        background: #103c83;
        z-index: 999;
        padding: 10px;
    }
    .m-logo {
        font-size: 0;
    }
    .m-logo a {
        font-size: 0;
        line-height: 40px;
        display: block;
    }
    .m-logo img {
        max-height: 40px;
        max-width: 80%;
        vertical-align: middle;
    }
    .m-tlink {
        padding: 10px 15px 0 15px;
    }
    .m-tlink a {
        font-size: 12px;
        margin-right: 5px;
        color: #fff;
        display: inline-block;
        line-height: 24px;
        background: #fff;
        color: #304174;
        line-height: 24px;
        padding: 0 15px;
        border-radius: 5px;
    }
    .m-search {
        position: relative;
        margin: 0 15px;
        padding-right: 50px;
        padding-left: 10px;
        padding-top: 5px;
        padding-bottom: 5px;
        position: relative;
        line-height: 35px;
        /* background: #fff; */
        margin-top: 15px;
        border: 1px solid #fff;
    }
    .m-search input[type="text"] {
        display: block;
        width: 100%;
        line-height: 25px;
        background: none;
        color: #fff;
    }
    .m-search input[type="text"]::placeholder {
        color: #fff;
    }
    .m-search input[type="submit"] {
        position: absolute;
        right: 0px;
        top: 0px;
        height: 35px;
        line-height: 35px;
        width: 50px;
        background-color: #fff;
        color: #103c83;
        text-align: center;
    }
    .m-nav {
        position: fixed;
        top: 60px;
        right: -100%;
        bottom: 0;
        z-index: 999;
        background: #20427a;
        overflow-y: scroll;
        width: 100%;
        max-width: 375px;
        border-top: 1px solid rgba(255, 255, 255, 0.2);
    }
    .m-nav ul {
        padding: 0 15px;
        /* border-top: 1px solid rgba(255, 255, 255, 0.2); */
    }
    .m-nav ul li {
        border-bottom: 1px solid rgba(255, 255, 255, 0.2);
        position: relative;
    }
    .m-nav ul li>span.on {
        transform: rotateZ(90deg);
    }
    .m-nav ul li ul {
        display: none;
    }
    .m-nav ul li ul li {
        border: none;
    }
    .m-nav>ul>li a {
        display: block;
        font-size: 14px;
        line-height: 20px;
        padding: 15px 0;
        position: relative;
        color: #fff;
    }
    .m-nav>ul>li ul li a {
        padding: 10px 0;
    }
    .m-nav>ul>li>span {
        position: absolute;
        width: 20px;
        height: 20px;
        background: url(https://vpn.nbut.edu.cn/https/77726476706e69737468656265737421e6e74fd229327d44300d8db9d6562d/https/77726476706e69737468656265737421e6e74fd229327d44300d8db9d6562d/https/77726476706e69737468656265737421eaff40923625661e700a9cb8d65027208618d0/system/_owners/dxxy/_webprj/images/m-nav_down.png) no-repeat;
        background-size: 14px 14px;
        background-position: center center;
        right: 0;
        top: 15px;
        cursor: pointer;
        display: block;
        color: #fff;
        transition: all 0.3s;
    }
    .banner .slick-prev,
    .banner .slick-next {
        background-size: 30px auto;
    }
    .fd-r p {
        font-size: 16px;
    }
}

@media screen and (max-width: 1000px) {
    .fd-l a img {
        height: 50px;
    }
}

@media screen and (max-width: 700px) {
    .banner .slick-prev {
        left: 0;
        background-size: 20px auto;
    }
    .banner .slick-next {
        right: 0;
        background-size: 20px auto;
    }
    .banner .slick-dots {
        bottom: 10px;
    }
    .banner .slick-dots li {
        margin: 0 10px;
        width: 15px;
        height: 15px;
    }
    .link h2 {
        font-size: 20px;
    }
    .fd-l {
        float: none;
    }
    .fd-r {
        float: none;
        width: auto;
    }
    .fd-l a img {
        height: auto;
        max-width: 639px;
        width: 100%;
    }
    .footer {
        padding: 15px 0;
    }
}